of these unlikely therapists. >>> and stop and go. from rudolph's holiday classic to the an tucks of sponge bob scare pa square pants, inside the stop motion studios where these beloved characters are making christmas magic. >> announcer: from the global resources of abc news, with terry more yamoran, cynthia mcf and bill weir in new york city, this is "nightline," december 7th, 2012. >> good evening, i'm terry moran. it started with two radio djs and a lighthearted prank call to the london hospital where the pregnant duchess kate was recovering from acute sickness. but today, that joke took an unexpected turn, when the nurse who picked up the call was found dead. abc's david wright brings us this look at the dark side of practical jokes. >> hello, good morning. >> oh, hello there. could i please speak to kate, please, my granddaughter. >> oh, yes, just hold on. >> reporter: as this prank phone call by two australian djs went viral around the world. >> if this has worked, it's the easiest prank call we've ever made. >> reporter: one can only imagine that the nurse that put the call through must
